Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Leonard C Guardino, PT

Physical Therapist in East Islip, NY · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811090319

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Registry record

Entity type Individual (Type 1)

Name Mr. Leonard C Guardino

Credential PT

Sex Male

Practice address 126 E Main St, Suite 2, East Islip, NY, 11730

Phone (631) 581-7707

Fax (631) 581-0049

Enumeration date Sep 7, 2006

Last updated in NPPES May 5, 2008

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 005260 (NY) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT credential

Other identifiers

Identifier	Type	State	Issuer
00875407	Medicaid	NY	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1811090319 active?

Yes, as of the latest NPPES snapshot, NPI 1811090319 is active (record last updated 2008-05-05).

How do I verify Leonard Guardino's NPI record?

Cross-check NPI 1811090319 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-05.